Gilbert b



' GILBERT B. FARNAM,

or NEwroRx, N. r.

FORCINGr-PUMP.'

Specification of vLetters Patent No. 12,199, dated January 9, 1855.

To all whom t mag/concern:

Be it known that I, GILBERT B. FARNAM,; of the city, county, and State of New York,f have invented certai'nnew and useful Im-f provements in Horizontal Pumps, of whichg' 'the following is a full, clear, and exact -description, reference being had to the a'ccomi panying drawings, makingpart of this specification, in which- Figure 1, is a`plan"f'view with l'the cap, containing the eduction valveand air vessel,` removed; Fig. 2, a cross sectionv taken at the?,

Aline A, a, of Fig. l; Fig. 3, a longitudinal? section taken at the line B, b, of Fig. l; Fig. 4, a separate view of the piston; and: Fig. 5,'a separate view of the'two part ringg used in introducing the piston.

The first partofv my invention consists in; arranging the two sets'ofv induction andi eduction valves of Adouble acting horizontal?y pumps on' two plates, one set at the top and the other at the bottom of a water box di-iy vided into .two compartments by.v means o f al vertical partition, one end of the horizontalj cylinder being' secured to one sidelof the said f water box vopposite one. of the compartments, when this is combined with the arrangement l of a side pipe which connects the'other compartment of the water box with the'opposite end of the cylinder, by means `of which arrangement ready access can be had to the valves for repairs while at the same time direct passages are provided forthe water to pass from the induction to and through the eduction valves, instead 0f the circuitous passages found in horizontal pumps as heretofore constructed.

The importance of this arrangement will be manifest when the fact is considered that, as horizontal pumps have been heretofore constructed, the water must pass from the induction valve to one end, and move toward the other end of the cylinder, and then move back before it can escape through the eduction valves, so that the momentum of the whole column of water must be stopped and restarted, at every stroke of the pump,which circumstance limits the velocity of the piston. But by my improved arrangement the column of water set in motion is not all suddenly arrested by the change of motion of the piston, for the reason that the column may continue to move directly through the water box and valves until arrested by its own weight notwithstanding the change of motion of the piston. In this Way I am enabled to work the piston at a much higher velocity than in'pumps as heretofore constructed, and without the sudden jars and shocks heretofore experienced.

The second part of my invention which relates tothe method of inserting the leather packed piston into the cylinder without injury to t-he packing, consists in forming the bore of the cylinder with an enlargement at the end which receives the piston, and where one of the water ways enter the side 0f the' cylinder, to which enlargement is fitted a ring ofthe same bore as the cylinder, and with the outer edg'f'e Haring out or trumpet shaped, when this is used in combination with, andas ameans of inserting, the leather packed piston. e

In the accompanying drawings a represents a four sided metal box, divided into twochambers b, c, by a vertical partition d,

cast therewith. To the bottom of this box is fitted a plate e, with the induction parts governed by valves f, The surface of this plateis covered with a sheet of leather that 'forms 'packing for the joint. v On the top of this sheet of leather, 'there are two metal "5"' plates g, lg, secured thereto by screws, which constitute the seats forthe induction valves 'made of metal and attached to leather, the leather of one end being made to project suiiiciently to be secured by a plate L, and screws to constitute the hinge. To the lower edge of the 'plate e, is secured or cast with the enlarged part z', of the induction pipe At thetop of the water box a, is fitted another plate c, with the eduction valves Z, Z, in all particulars made and fitted like the lower plate with the induction valves. These two plates at each end project beyond the box a, and are secured and bound together and to the box by screw bolts m, m, so that by simply unscrewing these bolts the valves can be examined, repaired and replaced.

The cylinder n of the pump is cast with a flanch o at one end by which it is secured to the side of the valve box a that end of the cylinder opening directly into the chamber b, of the water box a, on one -side of the partition; and the other chamber c, communie cates with the other end of the cylinder by means of a water way p, cast on one side of, and running the whole length of the cylinder. This water way opens into the cylinder by a port g, extending up to the lanch r, at the end of thecylinder to which the head s, is secured in the usual way.

The bore of the outer end of the cylinder as far as the port g extends, is of greater diameter than the general bore which the piston fits. And to this enlarged part is litt-ed a ring t, made in two parts, the inner bore of which is of the same diameter as the cylinder except at the outer end where it is flared or rounded as at u.

The piston o, is formed in the usual manner with two metal disks w, fw, secured to the end of'the piston rod, and embracing the inner edges of the two leather packings m, the said packings being crimped so as to be slightly conical that the edges may bear against the inner surface of the cylinder and insure a tight joint.

Before the piston is inserted in the cylinder the two part ring is rst put into the enlarged part of the cylinder, and as vthis makes a continuation of the bore of the piston, and the outer end of the bore of the ring is trumpet shaped, the piston with its leather packing rings can be inserted without injury to the leather rings which are` thus gradually compressed to the bore of the cylinder. In this way it will be seen that I efectually avoid cutting the leather rings by the edge of the water port Q. This had heretofore been a source of great inconvenience in pumps in which conical leather packing rings are used, for the rings must be made so that when out of the cylinder the open ends shall be of greater diameter than the bore of the cylinder to insure a water tight joint when inserted, and as the water port forms a break in the cylinder, and in inserting the piston the open end of one of the packing rings must first enter, it catches on the edge of the port, and is ing of the ring for inserting the piston, in'

two parts, as it can be made in one or more parts to extend all around the cylinder, or

only a segment, but prefer to make it in two' or more parts for the convenience of removing it after the piston has been inserted.

What I claim as my invention and desire,

to secure by Letters Patent is" y 1. Arranging the two vsets of induction and eduction valves of a double acting hori zontal pump on two plates secured one to the top and the other to the bottom of a water box divided by a vertical partition into two compartments, one end of the horizontal cylinder being secured to one side of the said water box opposite one of the compartments, when this is combined with the connection of the other compartment of the said water box with the opposite end of the cylinder by means of a side pipe, substantially as and for the purpose specied.

2. And I also claim making the outer end of the bore of the cylinder of an enlar ed diameter with va ring fitted thereto havlng a boreY of the same diameter as the cylinder, and flaring or trumpet formed at the outer end, substantially as specied, in combination with, and as a means of inserting the piston made 'with conical leather packing rings substantially as specified.'

GILBERT B. FARNAM.

Witnesses WM. H. BISHOP, CHAS.A N. BAMBURGH. 

